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Abstract

The purpose of the present work was to characterize the possible inhibition of pancreatic lipase by a tannin-rich extract obtained from the pinhão (Araucaria angustifolia seed) coat, based on the previous observation that this preparation inhibits α-amylases. Kinetic measurements of pancreatic lipase revealed that the pinhão coat tannin is an effective inhibitor. Inhibition was of the parabolic non-competitive type. The inhibition constants, \({\overline{K}}_{i1} \) and \({\overline{K}}_{i2} \), were equal to 332.7 ± 146.1 µg/mL and 321.2 \(\pm\) 93.0 µg/mL, respectively, corresponding roughly to the inhibitor concentration producing 50.
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